Answer:
-3x^2+2xy-4y^2
Step-by-step explanation:
(x^2+xy-3y^2)-(4x^2-xy+y^2)
x^2-4x^2+xy-(-xy)-3y^2-y^2
-3x^2+xy+xy-4y^2
-3x^2+2xy-4y^2
Answer:
Step-by-step explanation:
This is already factored for the zeros of the quadratic. If x - 5 = 0 and x - 20 = 0 then x = 5 and 20. The ball was kicked 5 feet out and landed at 20 feet down the field. The difference is 15 feet. That's how far the ball traveled from its initial position on the ground to its landing place.
So 15 feet from where it was kicked.
Cos(pi) = -1
You should have this memorized along with other values such as
sin(0) = 0
cos(0) = 1
sin(pi/2) = 1
cos(pi/2) = 0
sin(pi) = 0
cos(pi) = -1
sin(3pi/2) = -1
cos(3pi/2) = 0
and remember that tan = sin/cos
Answer:
yes
Step-by-step explanation:
The equation of a horizontal line parallel to the x-axis is
y = c
where c is the value of the y- coordinates the line passes through
y = 4 is a horizontal line passing through all points with a y- coordinate of 4
Answer:
Step-by-step explanation:
<u>According to sequence we observe:</u>
- the first term is a₁ = 1
- the common ratio is r = 2/7
<u>Equation of nth term of GP:</u>
<u>Substitute to get:</u>
- aₙ = 1*(2/7)ⁿ⁻¹ = (2/7)ⁿ⁻¹
Correct choice is A
